Alcea


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Related to Alcea: Alcea rosea, Aruncus, Althaea rosea

Alcea

 

(also Althaea), a genus of biennial or perennial herbs of the family Malvaceae. The alternate leaves are entire or serrate-lobed. The flowers are solitary or in groups in the leaf axils. About 60 species occur in the Eastern Mediterranean region. They are raised as ornamentals and for their nectar. The holly-hock (A. rosea) reaches 250 cm in height and has large, often double, flowers. The coloration of the flowers may be black-red, violet, pink, or white. Cultivated forms are used in floriculture. The plants thrive under most conditions, and they have a long flowering period. The black-red petals are used for coloring wines, liqueurs, and fabrics. The dried flowers are used medicinally in the form of teas as an emolient and for poultices. The stems yield a coarse fiber used to manufacture ropes, twines, and sackcloth.

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Foliar epidermal analysis: Dried leaves of representative specimens of genus Althaea and Alcea in Herbarium of Quaid-e-Azam University Islamabad Pakistan , listed in Table I were used for anatomical studies.
Foliar epidermal analysis: The data for quantitative micromorphological features of foliar epidermis of Alcea and althaea.
Epidermal cells in both species (Alcea rosea & Alcea lavateraeflora) of the genus Alcea were smooth walled with almost similar anatomical measurements.
FOLIAR ANATOMY AND PALYNOLOGY OF Alcea AND Althaea / Int.
38) 80 x um than those in Alcea species where maximum observed length was 55 um in A.
5 um in the genus Alcea, which is in contrast with the observations of El Naggar (2003) for Egyptian species.
The maximum value for pollen size is obtained for Alcea rosea that is 125(143.
5 um and serves as a distinguishing feature at infrageneric level in the genus Alcea as Alcea rosea could be delimited from A.
Table II: Quantitative data for foliar trichomes in Alcea L.
Since no report is available on the germination characteristics, or the effect of environmental conditions on Alcea aucheri (Boiss.
Pakravan (Department of Biology, Alzahra University) for identification of Alcea species through this study and Mr.
Systematic study of the genus Alcea (Malvaceae) in Iran.